Alexahdre gouejtj



A. eoumu. ELECTRIC SWITCH.

APPLICATION FILED JAN. 14, I9l9.

1,310,474; Patented July 22, 1919.

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dwmww @yawmazu fg zk ALEXANDRE GOURJU, or vIL'nEnRBnNNE, FRAn'cE, ASSIGNOR To in socrnrn A.

0F Lyon; FRANCE.

ELECTRIC SWITCH.

Specification of 'Letters Patent.

Patented July 22, 1919.

Application filed January 14, 1919. Serial No. 271,116.

To all whom it may concern:

Be it known that I, ALEXANDRE GoURJU, a. citizen of the French Republic, of Villeurbanne, France, have invented certain new and useful Improvements in Electric Switches, of which the following is a specification.

This invention relates to an electric switch for low voltages, for instance, for incandescent lamps, the main feature of which consists in the omission of the key, the cover itself of the switch taking its place. This gives greater elegance to the switch as well as providing impermeability to atmospheric agents due to the absence of any opening in the switch cover.

A form of construction of the improved switch is shown in the appended drawing.

Figure 1 is an outer front view.

Fig. 2 is a corresponding View with the cover removed.

Fig. 3 is a similar view thereof, the contacts being removed.

Fig. 4 is an inner view of the cover.

Fig. 5 is a section of the switch on line 1 1 of Fig. 3. Y

Fig. 6 is a back view of the switch.

Fig. 7 is a detail view in perspective, illustrating one of the two contacts.

Fig. 8 is a view illustrating the working.

This switch is composed of a base a constructed of any suitable insulating material and provided with a screw-threaded collar 6. This member, which can be fixed against any surface by screws 0 is provided with two holes d through which the line wires 6 are passed. The latter are bent back at their ends in order to enter other holes 7 into which are also introduced the tongues g of the contacts 9, the shape of which is separately represented in Fig. 7.

The cover h (Fig. 4) is screwed on the part b. It carries inside a diametrical bar 2' which, according to the position of the cover closes or opens the circuit between the contacts g, the upper parts of which form springs acting against the bar 2' and produce a brisk contact break at the opening of the circuit.

. The upper surfaces of the contacts 9 are prolonged by elbowed members 9 slightly it held in the base a; by its bent in order to form springs in the recesses f acting against the ends of the line wires and consequently effecting perfect contact.

With a View to preventing unscrewing of the cover, the latter has a recess j (Fig. 4) which forms a socket for the end of a spring bent end 70 and arranged to prevent the rotation of the cover beyond the limit provided and to bolt'the latter. elastic end 70 of the spring is must previously be disengaged by pushing back said end with the assistance of a. thin blade introduced under the cap.

Accordingly as the cover lb is rotated and the bar 2' occupies either of the two positions 71 or i (Fig. 8) the circuit will be closed or opened between the contacts 9.

What I claim as my invention and desire to secure by Letters Patent of the United States is 1. An electric switch comprising a base constructed of an insulating material, a screw-threaded collar provided with recesses for the reception of the line wires integral with said base, metal contact members inserted in said recesses in contact with said line wires, a rotatable cover screwed on said collar, and a cross bar within said cover and rotatable therewith to make or break contact with said contact members to open or close the circuit.

2. An electric switch comprising a base constructed of an insulating material, a screw-threaded collar provided with recesses for the reception of the line wires integral with said base, metal contact members inserted in said recesses in contact with said line wires, a rotatable cover screwed on said collar, a cross bar within said cover and rotatable therewith to make or break contact with said contact members to open or close the circuit, and means for limiting the rotation of the cover while allowing complete unscrewing of same when required.

3. An electric switch comprising a base constructed of an insulating material, a screw-threaded collar provided with recesses for the reception of the line wires integral with said base, angularly bent metal contact members, one arm of which is inserted In order to remove said cap, the

in the respective recess and makes contact allowing complete unscrewing of same when 10 with the line wire, and the other arm of required.

Which lies on the surface of said collar, a ro- In witness whereof I have signed this specitatable cover screwed on said collar, a metal fication in the presence of two witnesses.

cross bar within said cover and rotatable 4 therewith to make or break contact with ALEXANDRE GOURJU the arms of said contact members lying on Witnesses:

the surface of said collar and spring means JEAN GERMAIN,

for limiting the rotation of said cover while MARIN VAGHON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C.

It is hereby certified that thename of the assignee in Letters Patent N 0. 1,310,474, granted July 22, 1919, upon the application of Alexandre Gourju, of Villenrbanne, France, for an improvement in Electric Switches, was erroneously written and printed as La Societe A. Lecompte et Cie., Whereas said name should have been written and printed as La Soc-it A. L ecomte at Ole; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the ease in the Patent Ollice.

Signed and sealed this 30th day of September, A. D., 1919.

[SEAL] M. H. COULSTON,

Acting Commissioner of Patents. Cl. 175282. 

